An early stage of skin cancer. Bowen's disease is medically the same as "squamous cell carcinoma in situ." Squamous cell carcinoma is a tumor that develops from the squamous cells which are flat, scale-like cells in the outer layer of the skin (the epithelium). The term "in situ" (borrowed from the Romans) means "in th [..]

A skin disease marked by scaly or thickened patches on the skin and often caused by prolonged exposure to arsenic. The patches often occur on sun-exposed areas of the skin and in older white men. Thes [..]

A persistent progressive non-elevated red scaly or crusted plaque which is due to an intradermal Carcinoma and is potentially malignant. Atypical squamous Cells proliferate through the whole thickness [..]

A skin disease marked by scaly or thickened patches on the skin and often caused by prolonged exposure to arsenic. The patches often occur on sun-exposed areas of the skin and in older white men. These patches may become malignant (cancer). Also called precancerous dermatitis and precancerous dermatosis.